# AutomationDirect DURApulse GS4-42P0

Hardware · `GS4-42P0` · verification: source checked

The GS4-42P0 is a DURApulse GS4 series AC variable frequency drive in a NEMA 1 enclosure, rated 2 hp with a 460 VAC three-phase input. It controls three-phase induction motors in either sensorless vector (SVC) or V/Hz mode and has integrated dynamic braking. An RS-485 port carries Modbus RTU, Modbus ASCII and BACnet, and optional EtherNet/IP and Modbus TCP cards can be added.

## Specification

| Property | Value |
|---|---|
| Category | vfd |
| Weight | 3.54 kg |
| Supply voltage | 460 VAC, 3-phase |
| Rated power | 1.49 kW |
| Rated current | 3.8 A |
| Frame size | A |
| Output type | PWM output |
| IP rating | IP20 |
| Operating temp min | -10 °C |
| Operating temp max | 50 °C |

## Connected

- Manufacturer: [AutomationDirect](https://machineschema.com/manufacturer/automationdirect.md)
- Protocols: [MODBUS ASCII](https://machineschema.com/protocol/modbus-ascii.md), [MODBUS RTU](https://machineschema.com/protocol/modbus-rtu.md)

## Safety

- Safe Torque Off (STO) is built-in.
- A user-supplied external fuse is required.
- Enclosure is NEMA 1 with IP20 protection, intended for wall mounting.
- UL Listed, file # E198015; CE declaration available; RoHS compliant.

## Study notes

- Control mode is selectable between SVC (sensorless vector) and V/Hz.
- Carrier frequency range is 2-15 kHz; output frequency range is 0.1-599 Hz.
- RS-485 port on an RJ12 connector, port speed up to 115.2k baud.
- Port protocols listed are Modbus RTU, Modbus ASCII and BACnet.
- I/O: 8 discrete inputs at 24 VDC (sinking/sourcing), 4 discrete outputs (relay/sinking/sourcing, Form C SPDT), 3 analog inputs (11-bit) and 2 analog outputs (10-bit).
- Analog input ranges 0-20 mA / 4-20 mA and +/-10 VDC; analog output ranges 0-20 mA / 4-20 mA and 0-10 VDC.
- Discrete output rating 3 A/point relay, 50 mA/point discrete; nominal discrete output voltage 240 VAC and 48 VDC.
- Embedded PLC programmable in ladder; connections are screw terminals.
- Integrated dynamic braking is included; there is no integrated EMI filter.
- Optional EtherNet/IP and Modbus TCP communication cards are available separately.
- Intended for use with 3-phase induction motors.
- Listed shipping weight is 7.8 lb, which includes the drive, keypad and quick start insert.

## Sources

1. [DURApulse AC High-performance Drive: 460 VAC, 2hp with 3-phase input, (VFD) (PN# GS4-42P0) | AutomationDirect](https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/high-performance_vfds/gs4-42p0) (accessed 2026-10-26)
2. [GS4 42P0 cutsheet](https://cdn.automationdirect.com/static/specs/cutsheet/GS4-42P0_cutsheet.pdf) (accessed 2026-10-26)

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